请看《中国日报》的报道：
The illegal cooking oil is usually made from discarded kitchen waste that has been refined, the report said, adding that the oil, which contains a highly toxic and carcinogenic substance called aflatoxin, can cause cancer.
该报告称，“地沟油”通常使用餐厨垃圾提炼而成，成分中含有的黄曲霉素毒性很强，可致癌。
使用illegal cooking oil已成为餐饮行业的open secret（公开的秘密）。国家药监局近日发布紧急通知，要求严防“地沟油”流入餐饮服务环节，对于违反单位，情节严重的将吊销其餐饮服务许可证。
请你就此谈论你读了该新闻的感受。
要求：词数120左右，行文连贯，清晰地表达思想
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